Bicron Micro Rem Ion Chamber
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The Model 43-5 is a 50 cm² Alpha Scintillator that can be used with a several 
different instruments including survey meters, scalers, ratemeters, and alarm ratemeters.
Radiation Detected: Gamma and x-ray, 40 keV to 1.3 MeV
Detector: Internal, tissue equivalent, organic scintillator
Accuracy: Within 10% of reading for 137Cs between 20% and 100% of full scale on any range
Energy Response: See energy response curve
High Voltage: Electronically stabilized, factory set during calibration, with check band on the meter
Warm Up Time: None
Response Time: Optimized for each range, 0-90% of final reading as follows:
Range: Time; X0.1 : <15 seconds; X1: <15 seconds; X10: <5 seconds; X100: <2 seconds; X1000: <2 seconds
Temperature: Operational from -4°F to 122°F (-20°C to 50°C)
Humidity: <5% change in reading from 10% to 95% RH
Geotropism: Within +2% of full scale
Shock: 100 g per lightweight machine of Mil-STD 202C, method 202B
Vibration: 5 g in each of three mutually orthogonal axes at one or more frequencies from 10-33 Hz
Meter Reset Button: Allows meter to reset to "0" for repeat measurement
Display: Ruggedized, recessed, high-torque 1 mA meter protected by impact resistant Lexan polycarbonate window with 3.35" (85.1 mm) scale marked:
Control: Eight position rotary switch: Off; Bat. (checks the condition of the batteries); HV (audits the detector high voltage): X1000, X100, X10, X1, X0.1 (counting ranges=multiply the meter reading by these figures)
Energy Characteristics
Visit them online at Thermo.